PR Persei (also known as HD 14404, HIP 10995, or BD+57 550) is a red supergiant star located in the constellation of Perseus in the northern celestial hemisphere. Classified as a variable star of spectral type M1-Iab-Ib, it exhibits mild brightness variations due to pulsations in its outer layers. It resides in the Milky Way galaxy, approximately 9,000 light-years from the Solar System. It can be seen near the Double Cluster of Perseus through a telescope or binoculars.
Characteristics
PR Persei is a cool, luminous red supergiant with a spectral type of M1 Iab-Ib, indicating an intermediate luminosity class between Iab and Ib supergiants. The star is about 9.2 times as massive and 401 times as large as the sun. At a temperature of 3715 K, it radiates 27,542 times the solar luminosity.
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